Sister or Boyfriend

You should say something...ask your boyfriend about it first. Confront him about it. Don't yell at him or your sister though. Its liable to make things worse

When you do confront one of them, just remember it takes two to tango.

Ryan ^ ..so true

hmmm....your sister will always be your sister you cant change that, but if neither of them have even said anything that is so bad, you should get them both together and try and sort it out.xxxx

So wait..ur sister and ur boyfriend were having sex??? :-S ok thats really really out of order...seriously...i think id lose it with both of them...but thats not the best way to go about this. The best thing I can suggest is to talk to both of them on their own, then them together. How long have you been with your boyfriend and what was your relationship like with him?

OMG! okay yea i agree with what everyones sayin...down just sit there quite cos they'll think they can get away with it. confront them both but separtly and get storieds from wither of them! tell them its bang out of order....finish with ur bloke and tell him u dont want to see him in ur house agen adn tell ur sdis how hurt and betrayed u feel....make them REALLY work for ur forgiveness and dont give in...both of them deserve nothing from u so stand ur ground n tell them what u think cos ur worth mroe than that at the end of the day.

........what they said.